EP0411041B1 - Elektromechanische brennstoffeinspritzvorrichtung - Google Patents

Elektromechanische brennstoffeinspritzvorrichtung Download PDF

Info

Publication number
EP0411041B1
EP0411041B1 EP89905561A EP89905561A EP0411041B1 EP 0411041 B1 EP0411041 B1 EP 0411041B1 EP 89905561 A EP89905561 A EP 89905561A EP 89905561 A EP89905561 A EP 89905561A EP 0411041 B1 EP0411041 B1 EP 0411041B1
Authority
EP
European Patent Office
Prior art keywords
armature
armature assembly
metering orifice
assembly
pin
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP89905561A
Other languages
English (en)
French (fr)
Other versions
EP0411041A1 (de
Inventor
Paul Desmond Daly
Mark Allen Brooks
Robert Edward Fallis
Mark Steven Cerny
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP0411041A1 publication Critical patent/EP0411041A1/de
Application granted granted Critical
Publication of EP0411041B1 publication Critical patent/EP0411041B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
    • F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
    • F02M51/0664—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
    • F02M51/0671—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/08—Injectors peculiar thereto with means directly operating the valve needle specially for low-pressure fuel-injection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0644—One-way valve
    • F16K31/0655—Lift valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0686—Braking, pressure equilibration, shock absorbing
    • F16K31/0696—Shock absorbing, e.g. using a dash-pot
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/30—Fuel-injection apparatus having mechanical parts, the movement of which is damped
    • F02M2200/306—Fuel-injection apparatus having mechanical parts, the movement of which is damped using mechanical means

Definitions

  • the present invention relates in general to means for controlling the bounce or rebound motion of an armature and finds use in performance fuel injectors.
  • a solenoid valve comprises an armature movable between first and second positions. The extremes of these first and second positions are often defined by mechanical stops. Armatures, as is known in the art, are moved in one direction by an electro-magnetic force generated by a coil of wire and often moved in the opposite direction by a return spring. When the armature impacts a stop it bounces. Bounce or rebound is detrimental especially if the solenoid is to be used as a positioning device because desired position cannot be maintained, or if the solenoid is incorporated within a fuel injector wherein when the armature moves toward or away from a valve seat due to bounce or rebound more or less fuel, as the case may be, will be ejected from the fuel injector.
  • the bounce of an armature affects the operation of a fuel injector by: prolonging or shortening the duration of injection, causing non-linearality in calibration, excessive wear about the valve seat area, poor and variable atomization of the ejected fuel, a lack of repeatability in the operation of the injector over its useful life and a cycle-to-cycle variation in the performance of the injector.
  • the document US-A-3 334 679 discloses an electro-mechanical fuel injector comrising an armature movable relative to a valve seat for opening and closing an metering orifice.
  • the head of the armature carries a disc which in turn carries an annular disc.
  • the discs operate to dampening only the rebound of the armature when the armature approaches the stop.
  • a further object of the present invention is to provide means for damping the motion of an armature to lessen and/or totally eliminate bounce.
  • a further object of the invention is to eliminate bounce through the use of an energy absorbing device.
  • a further object of the invention is to dampen armature motion by generating a viscous shear force.
  • the invention comprises a mechanism for damping the motion of an armature and may be incorporated within an electromechanical fuel injector comprising: a housing and a valve seat including a valve seating surface and a metering orifice disposed at a lower end of the housing.
  • An armature assembly is movable relative to the valve seating surface for opening and closing the metering orifice, and includes an armature and a pin extending therefrom and adapted to engage the seating surface.
  • the fuel injector additionally includes means for moving the armature assembly comprising: a coil assembly comprising a coil and a stator magnetically coupled therewith, and when activated operative to move the armature assembly in a direction to open the metering orifice; and bias means for urging the armature assembly in a direction to close the metering orifice.
  • a fluid chamber defined upstream of the metering orifice, surrounding a portion of the armature assembly; and means, are additionally provided, movable with the armature assembly within the fluid chamber, for generating a viscous force to damp the motion of the pin by dissipating energy from a collision of said armature means with the seating surface.
  • FIGURE 1 diagrammatically illustrates a fuel injector incorporating the present invention.
  • FIGURE 2 is a cross-sectional view taken through 2-2 of FIGURE 1.
  • FIGURE 3 illustrates an alternate embodiment of the invention.
  • FIGURE 1 illustrates an electromagnetic fuel injector 10 comprising a housing 12 and a valve seat 14 disposed at a lower end 20 of the housing 12.
  • the valve seat may be formed as an insert received into the housing 12 or integral therewith.
  • the valve seat 14 defines a metering orifice 18.
  • the seating surface 16 of the valve seat 14 is substantially conically shaped.
  • the fuel injector includes an armature assembly 30 movable in relation to the valve seating surface 16 for opening and closing the metering orifice 18.
  • the armature assembly 30 further includes an armature 32 and a narrow pin 34 extending therefrom and adapted to engage the seating surface 16 proximate the metering orifice.
  • the engagement end 36 of the pin 34 is spherically shaped.
  • the fuel injector 10 further includes means for moving the armature assembly 30 comprising a coil assembly 40 including a coil 42 and a stator 44 magnetically coupled therewith.
  • Means are provided to receive fuel into a fuel chamber 50, formed in the housing 12, which may include a bottom feed inlet 47 or other arrangement as known in the art.
  • the above mentioned armature assembly 30 may further include a spring 46 for urging the armature 32 and pin 34 in a direction to close the metering orifice.
  • the pin 34 and armature 32 may be received within the fluid chamber 50 upstream of the metering orifice 18.
  • a damping assembly 60 including a cup-shaped element 62 is movable with the armature assembly and spaced from the walls 64 of the fluid chamber 50 to generate a viscous force therebetween.
  • the cup-shaped element 62 further includes a central opening 65 into which the pin is received.
  • the cup-shaped element 62 comprises an annular structure having a base 70 which includes the first opening 65.
  • a circumferential edge 74 extends axially from the base 70 and is spaced from the walls a distance, T, sufficient to develop a shearing action of the fluid therebetween. It is preferable that the length of the circumferential edge 74 be at least .25 of the diameter of the element 62. In this manner, sufficient damping is achieved and additionally the cup 62 will be prevented from assuming a significant angular orientation relative to the axis of the fuel injector. It is preferable that the spacing, G, between the cup and the pin 34 is larger than the spacing, T.
  • the bottom or base 70 may further include a plurality of openings 76.
  • the openings 76 are sized such that as the cup moves axially they do not create a significant pressure drop thereacross. The primary function of the openings 76 is to permit fluid flow through the chamber 50.
  • the base or bottom 70, proximate the opening 65, includes an enlarged inner wall 80 defining upper and lower annular surfaces 82 and 84 for receipt of springs 86 and 88. Spring 86 biases the element 60 against a lower portion of the armature 32.
  • the second spring 88 biases the cup-shaped element against a securement or ledge 90 formed in the pin 34. It may be optionally desirable to utilize springs 86 and 88 of differing spring constants. As an example, the upper spring 86 may have a weaker spring constant than the lower spring 88. As an example, the spring constant of the lower spring 88 may be in the vicinity of 4-6 lbs/inch (700-1051 N/m) while the upper spring may have a spring constant of less than 1 lb/inch (175,1 N/m).
  • the fuel injector is illustrated in is closed position in FIGURE 1.
  • the armature 32 is drawn toward the stator 44 thereby raising the pin 34 off from the seating surface 16 to permit fuel flow out from the chamber 50 through the metering orifice 18.
  • the spring 46 will urge the pin downwardly to seal the metering orifice 18.
  • the cup-shaped element 62 will follow its motion. By virtue of the narrow spacing between its circumferential edge 74 and the walls 64 a frictional shear force will be developed at the boundary therebetween.
  • the pin 34 will have a tendency to bounce.
  • pin 34 The upward motion of pin 34 is communicated to the element 62 through the lower spring 88.
  • the friction shear force generated between the cup 62 and wall 64 is communicated to the pin 34 through spring 88 which quickly dampens the motion of the pin preventing it from bouncing.
  • FIGURE 3 illustrates an alternate damping assembly 60′.
  • the assembly 60′ includes a circular member 100 extending radially from a hollow cylindrical member 102.
  • the circular member 100 includes a plurality of openings 76 similar to those shown in FIGURES 1 and 2.
  • the cylindrical member 102 includes a central bore 104 into which is received the pin 34 with an edge spacing of G.
  • Axially extending from and circumferentially placed about the circular member 100 is an annular member 110. As illustrated the annular member 110 extends above and below the circular member 100 to increase the contact area with the wall 64.
  • the various members 100, 102 and 110 are of integral construction.
  • the annular member 110 is closely spaced, T, relative to the wall 64 to generate a viscous shear force by reacting with the fuel or fluid therebetween.
  • the cylindrical member 102 is carried by the armature 32 and pin 34 and secured thereto by upper and lower O-rings 120 and 122 and a snap ring 90′. It is preferable, though nota requirement of the invention, that both O-rings be lightly compressively loaded. It is believed that an acceptable spring constant of the O-rings to be about 100 1b/in (17513 N/m) for minute deflections. Typical of the O-rings used are AS-568-003/BN 70 manufactured by Parker Hannifan or Apple Rubber Products, Inc.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fuel-Injection Apparatus (AREA)

Claims (9)

1. Elektromechanische Brennstoffeinspritzvorrichtung (10)
   mit einem Gehäuse (12) und einem Ventilsitz (14), der eine Ventilsitzfläche (16) und eine Drosselöffnung (18) aufweist;
   mit einer gegenüber der Ventilsitzfläche (16) beweglichen Ankeranordnung (30) zum Öffnen und Schließen der Drosselöffnung (18), mit einem Anker (32), einem sich vom Anker erstreckenden Schaft (34), der mit der Sitzfläche (16) in Eingriff bringbar ist und mit einer Dämpfung zum Vermeiden eines Rückprallens der Ankeranordnung;
   mit Mitteln zum Betätigen der Ankeranordnung (30),
   die eine Spulenanordnung (40) mit einer Spule (42) und einem magnetisch gekoppelten Stator (44) aufweisen , mit Mitteln zum Betätigen der Ankeranordnung in Öffnungsrichtung der Drosselöffnung (18);
   mit einer Vorspannung (46) zum Beaufschlagen der Ankeranordnung in Schließrichtung der Drosselöffnung (18);
   mit einer Strömungsmittelkammer (50) stromauf der Drosselöffnung, mit einer Seitenwand (64), die einen Teil der Ankeranordnung (30) umgibt und sich parallel dazu erstreckt,
   dadurch gekennzeichnet, daß die Dämpfungseinrichtung (60) nachgiebig mit der Ankeranordnung zwischen deren Enden verbunden ist, gegenüber der Strömungsmittelkammer und in dieser axial beweglich ist und ein Element (62) aufweist, das gegenüber der Seitenwand (64) der Strömungsmittelkammer (50) beabstandet ist und eine viskose Scherkraft zwischen der zweiten Wand (64) und dem Element (62) erzeugt und daß
   eine Halterung (80-90) mit Federmitteln (86;88) und Abstützmitteln (82; 84;90) an der Ankeranordnung das Element gegenüber der Ankeranordnung stützt.
2. Vorrichtung nach Anspruch 1, wobei die Federmittel von Federn (86; 88) gebildet sind, die oberhalb und unterhalb des Elementes (62) angeordnet sind.
3. Vorrichtung nach Anspruch 2, wobei die Federn von O-Ringen (120;122) gebildet sind.
4. Vorrichtung nach Anspruch 3, wobei die O-Ringe (122; 124) zwischen dem Anker (32) und der am Schaft (34) vorgesehenen Abstützung (90′) leicht vorgespannt sind.
5. Vorrichtung nach Anspruch 2, wobei das Element (62) einen Mittelabschnitt (70; 100) aufweist, der den Schaft (34) umgibt, sowie mehrere axial fluchtende Öffnungen (76).
6. Vorrichtung nach Anspruch 3, wobei das Element (62) ein zylindrisches Bauteil (102) mit einer Bohrung (104) um den Schaft (34) ist und das Ende jeweils an einem der O-Ringe (120; 122) anstößt, wobei ein kreisförmiges bauteil (100) sich radial von dem zylindrischen Bauteil (102) erstreckt und ein ringförmiges Bauteil (110) am Umfang des kreisförmigen Bauteils (100) angeordnet ist und einen kleinen Abstand von der Wandung (64) aufweist.
7. Vorrichtung nach Anspruch 6, wobei das ringförmige Bauteil (110) sich jenseits des kreisförmigen Bauteils (100) erstreckt.
8. Vorrichtung nach Anspruch 7, wobei das Verhältnis der Länge des ringförmigen Bauteils (110) neben der Wandung (64) zum Durchmesser des Elementes (62) quer zu dem ringförmigen Bauteil (110) zwischen 0,25 und 0,33 beträgt.
9. Vorrichtung nach Anspruch 2, wobei das Element (62) ringförmig ist mit einer Basis (70) und einer ersten Öffnung (65) zur Aufnahme des Ankers (32) und mit einem sich axial erstreckenden Umfangsrand (74), der gegenüber der Wandung (64) um einen bestand T beabstandet ist, der zum Erzeugen einer Scherwirkung des Strömungsmittels in dem Spalt ausreichend ist.
EP89905561A 1988-04-29 1989-04-28 Elektromechanische brennstoffeinspritzvorrichtung Expired - Lifetime EP0411041B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/188,250 US4878650A (en) 1988-04-29 1988-04-29 Armature with shear stress damper
US188250 1988-04-29

Publications (2)

Publication Number Publication Date
EP0411041A1 EP0411041A1 (de) 1991-02-06
EP0411041B1 true EP0411041B1 (de) 1992-02-26

Family

ID=22692376

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89905561A Expired - Lifetime EP0411041B1 (de) 1988-04-29 1989-04-28 Elektromechanische brennstoffeinspritzvorrichtung

Country Status (4)

Country Link
US (1) US4878650A (de)
EP (1) EP0411041B1 (de)
JP (1) JP2670874B2 (de)
WO (1) WO1989010478A1 (de)

Families Citing this family (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5197675A (en) * 1991-02-11 1993-03-30 Siemens Automotive L.P. Fuel rail having rolling ball fuel injectors
JP2665842B2 (ja) * 1991-08-02 1997-10-22 三菱電機株式会社 電磁弁
US5139224A (en) * 1991-09-26 1992-08-18 Siemens Automotive L.P. Solenoid armature bounce eliminator
US5236173A (en) * 1992-03-11 1993-08-17 Siemens Automotive L.P. Armature bounce damper
US5389905A (en) * 1992-04-22 1995-02-14 Matsushita Electric Works, Ltd. Damper, electromagnet assembly employing the damper, and relay employing the electromagnet assemblies
US5288025A (en) * 1992-12-18 1994-02-22 Chrysler Corporation Fuel injector with a hydraulically cushioned valve
US5271565A (en) * 1992-12-18 1993-12-21 Chrysler Corporation Fuel injector with valve bounce inhibiting means
US5299776A (en) * 1993-03-26 1994-04-05 Siemens Automotive L.P. Impact dampened armature and needle valve assembly
IT1277534B1 (it) * 1995-09-01 1997-11-11 Whirlpool Italia S P A Metodo e circuito per aumentare la durata di vita delle elettrovalvole
US5865371A (en) 1996-07-26 1999-02-02 Siemens Automotive Corporation Armature motion control method and apparatus for a fuel injector
DE19754257A1 (de) * 1997-12-06 1999-06-10 Bosch Gmbh Robert Magnetventil für eine flüssigkeitsgeregelte Heiz- und/oder Kühlanlage
US6109541A (en) * 1998-07-23 2000-08-29 Caterpillar Inc. Apparatus for reducing the bounce of a poppet valve
DE19842155B4 (de) * 1998-09-15 2005-06-30 Stabilus Gmbh Ventileinrichtung
IT1309674B1 (it) * 1999-03-26 2002-01-30 Magneti Marelli Spa Iniettore carburante
US6318646B1 (en) 1999-03-26 2001-11-20 MAGNETI MARELLI S.p.A. Fuel injector
JP2000297720A (ja) * 1999-04-13 2000-10-24 Hitachi Ltd 燃料噴射装置
DE19921489A1 (de) * 1999-05-08 2000-11-09 Bosch Gmbh Robert Brennstoffeinspritzventil
JP2001003840A (ja) * 1999-06-21 2001-01-09 Hitachi Ltd 燃料噴射弁
DE10039078A1 (de) * 2000-08-10 2002-02-21 Bosch Gmbh Robert Brennstoffeinspritzventil
JP2002054524A (ja) * 2000-08-11 2002-02-20 Aisan Ind Co Ltd 燃料噴射弁
DE10043085A1 (de) * 2000-09-01 2002-03-14 Bosch Gmbh Robert Brennstoffeinspritzventil
US6629650B2 (en) * 2001-07-10 2003-10-07 Delphi Technologies, Inc. Fuel injector with integral damper
DE102004030976A1 (de) * 2004-06-26 2006-01-19 Robert Bosch Gmbh Taktventil
FR2875863B1 (fr) * 2004-09-30 2009-05-01 Peugeot Citroen Automobiles Sa Dispositif d'injection a rayonnement accoustique reduit
US7900604B2 (en) * 2005-06-16 2011-03-08 Siemens Diesel Systems Technology Dampening stop pin
DE102005030957B4 (de) * 2005-06-30 2024-01-18 Robert Bosch Gmbh Einrichtung zur Dämpfung des Ankerhubs in Magnetventilen
FR2892156B1 (fr) * 2005-10-19 2008-01-18 Peugeot Citroen Automobiles Sa Dispositif d'amortissement des vibrations pour un injecteur de carburant
EP2236810B1 (de) 2009-03-25 2011-10-12 Continental Automotive GmbH Einspritzventil
US7980226B2 (en) * 2009-03-30 2011-07-19 Hitachi, Ltd Fuel system for a direct injection engine
DE102009046822A1 (de) * 2009-11-18 2011-05-19 Robert Bosch Gmbh Schaltventil mit einem in einem Gehäuse bewegbaren Ventilelement
DE102009060293A1 (de) * 2009-12-23 2011-06-30 Robert Bosch GmbH, 70469 Magnetventil sowie Fahrerassistenzeinrichtung
EP2511515A1 (de) * 2011-04-14 2012-10-17 Continental Automotive GmbH Injektor zum Einspritzen von Flüssigkeit
DE102013220877A1 (de) * 2013-10-15 2015-04-16 Continental Automotive Gmbh Ventil
JP2016125376A (ja) * 2014-12-26 2016-07-11 株式会社テージーケー 可変容量圧縮機用制御弁
DE102015213221A1 (de) * 2015-07-15 2017-01-19 Robert Bosch Gmbh Ventil zum Zumessen eines Fluids
US10378535B2 (en) * 2016-11-02 2019-08-13 Caterpillar Inc. Damping assembly
US11293564B2 (en) 2020-06-05 2022-04-05 Automatic Switch Company Valve silencing choke

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3334679A (en) * 1964-05-29 1967-08-08 Philips Corp Method and devices for the supply and exact proportioning of fuel
JPS58221085A (ja) * 1982-06-14 1983-12-22 Matsushita Electric Ind Co Ltd 圧力制御弁
SU1122856A1 (ru) * 1983-07-08 1984-11-07 Научно-производственное объединение по созданию и выпуску средств автоматизации горных машин "Автоматгормаш" Электромагнитный клапан

Also Published As

Publication number Publication date
US4878650A (en) 1989-11-07
WO1989010478A1 (en) 1989-11-02
JPH03502227A (ja) 1991-05-23
JP2670874B2 (ja) 1997-10-29
EP0411041A1 (de) 1991-02-06

Similar Documents

Publication Publication Date Title
EP0411041B1 (de) Elektromechanische brennstoffeinspritzvorrichtung
EP0382721B1 (de) Dynamischer energie-dämpfer
JP4067571B2 (ja) マグネット弁
JP4106669B2 (ja) 燃料噴射装置の電磁計測バルブ
US5139224A (en) Solenoid armature bounce eliminator
US6056264A (en) Solenoid actuated flow control valve assembly
EP1801409B1 (de) Kraftstoffinjektor
EP2113651B1 (de) Elektromagnetische Kraftstoffeinspritzdüse für gasförmige Kraftstoffe mit verschleißfester Stoppvorrichtung
EP0055518A1 (de) Magnetventil
US8813899B2 (en) Damper and vehicle seat
US7159840B2 (en) Solenoid having reduced operating noise
CZ20002388A3 (cs) Vstřikovací ventil paliva
JP2003021025A (ja) 緩衝された一体的な可動子部材を備えた磁石弁
EP2249022B1 (de) Elektromagnetische Kraftstoffeinspritzdüse mit hydraulischer Dämpfung
US4272748A (en) Print wire solenoid
JP7482073B2 (ja) 電磁式燃料噴射弁
JPH11132133A (ja) 燃料噴射弁
USRE31813E (en) Print wire solenoid
JPH08182296A (ja) ソレノイド
WO2021044938A1 (ja) インジェクタ
JPH06159654A (ja) ガスガバナ
CA1151714A (en) Print wire solenoid
JPH06213360A (ja) 電磁弁
JP2001214835A (ja) 燃料噴射弁およびこれを搭載する内燃機関

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19900828

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB IT

17Q First examination report despatched

Effective date: 19910806

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT

REF Corresponds to:

Ref document number: 68900882

Country of ref document: DE

Date of ref document: 19920402

ET Fr: translation filed
ITF It: translation for a ep patent filed

Owner name: STUDIO JAUMANN

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20030410

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20030429

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20030616

Year of fee payment: 15

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040428

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20041103

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20040428

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20041231

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050428